Slight refactor of code initialising memory for argments/environment c-strings
so that it is easier to read.
Implemented llvm.umul.with.overflow
Merge pull request #18 from MartinNowack/FeatureUMulOverflow

Patch Set III (update) Implemented llvm.umul.with.overflow
Warn if compiler is not found to build .ll files
Use llvm-link instead of deprecated llvm-ld
Add support for dejagnu as removed from LLVM 3.2

Added support for dejagnu to still allow tests to be executed under
LLVM 3.2.
Merge pull request #14 from MartinNowack/BuildSystem

Patch Set V - Build system
Merge pull request #9 from delcypher/refactor-arg-init

Slight refactor of code initialising memory for argments/environment c-strings